BA_PH_436-100_EN_44-21.docx
24
7.6
Connecting the Extraction Unit
•
The machine must be connected to an effective
extraction system on-site.
•
The suction nozzle has a diameter of 160 mm.
•
All parts of the extraction system, including hoses,
must be included in the earthing measure.
When flexible suction hoses are used,
they must be flame-retardant.
When the machine is switched on,
the extraction system must start
automatically.
Figure 9: Extraction connection
Two signal generator lines for automatic switching of the extraction system can be connected to the terminals
13
and
14
of contactor
Q2
.
Installation only by a qualified electrician!
The air speed must be set in such a way that, with the extraction line connected and the tools stationary, an
average air speed of
-
20 m/s (1450 m³/h) for dry chips,
-
28 m/s (2050 m³/h) with moist chips (moisture 18 % or more)
is achieved at the extraction nozzles.
Required negative pressure (at 20 m/s)
600 Pa
If the machine is properly connected to the extraction system, it can be assumed that the wood dust assess-
ment value will be complied with (permanently and safely).
ø
1
6
0
Suction Nozzle
•
The air velocity must be checked before initial commissioning and after significant changes.
•
The extraction system must be checked daily for obvious defects after initial commissioning
and monthly for effectiveness
.